From 25315498841259323e18f549d1ad9d9aba6632cc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Fri, 18 Sep 2026 23:50:32 -0700
Subject: [PATCH] Added bx::isDebuggerPresent. (#430)

---
 include/bx/debug.h |  6 ++++++
 src/debug.cpp      | 28 ++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/include/bx/debug.h b/include/bx/debug.h
index bfd3b78..cf833c7 100644
--- a/include/bx/debug.h
+++ b/include/bx/debug.h
@@ -19,6 +19,12 @@ namespace bx
 	///
 	void debugBreak();
 
+	/// Check whether a debugger is present or not.
+	///
+	/// @returns True when debugger is present. Otherwise returns false.
+	///
+	bool isDebuggerPresent();
+
 	/// Write string to debug output.
 	///
 	/// @param[in] _str Zero terminated string to write.
diff --git a/src/debug.cpp b/src/debug.cpp
index c2a2626..8a23c54 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -17,6 +17,11 @@
 #	include <execinfo.h> // backtrace, backtrace_symbols
 #	include <unwind.h>   // _Unwind_Backtrace
 #	include <dlfcn.h>
+
+#	if BX_PLATFORM_OSX
+#		include <sys/sysctl.h> // sysctl
+#		include <unistd.h>     // getpid
+#	endif // BX_PLATFORM_OSX
 #endif // BX_PLATFORM_*
 
 #ifndef BX_CONFIG_CALLSTACK_USE_EXECINFO
@@ -79,6 +84,7 @@ extern "C" __declspec(dllimport) unsigned int __stdcall SetErrorMode(unsigned in
 #elif  BX_PLATFORM_WINDOWS \
 	|| BX_PLATFORM_WINRT   \
 	|| BX_PLATFORM_XBOXONE
+extern "C" __declspec(dllimport) bool  __stdcall IsDebuggerPresent();
 extern "C" __declspec(dllimport) void  __stdcall OutputDebugStringA(const char* _str);
 extern "C" __declspec(dllimport) void* __stdcall GetStdHandle(unsigned long _stdHandle);
 extern "C" __declspec(dllimport) int   __stdcall WriteFile(void* _file, const void* _buffer, unsigned long _sizeInBytes, unsigned long* _outNumberOfBytesWritten, struct _OVERLAPPED* _overlapped);
@@ -128,6 +134,28 @@ namespace bx
 #endif // BX
 	}
 
+	bool isDebuggerPresent()
+	{
+#if BX_PLATFORM_WINDOWS
+		return 0 != ::IsDebuggerPresent();
+#elif BX_PLATFORM_OSX
+		struct kinfo_proc info;
+		size_t size = sizeof(info);
+		int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid() };
+
+		bx::memSet(&info, 0, sizeof(info) );
+
+		if (0 != sysctl(mib, BX_COUNTOF(mib), &info, &size, NULL, 0) )
+		{
+			return false;
+		}
+
+		return 0 != (info.kp_proc.p_flag & P_TRACED);
+#else
+		return false;
+#endif // BX_PLATFORM_*
+	}
+
 #if BX_PLATFORM_WINDOWS \
  || BX_PLATFORM_WINRT   \
  || BX_PLATFORM_XBOXONE